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Gonadal and extragonadal sperm reserves were determined in testicular and epididymal tissues obtained from 14 small highland Abyssinian Zebu (SHAZ) and from 15 Borana bulls slaughtered at the Debre Zeit abattoir. Bulls were mature and over six years of age. Body weight and scrotal circumference w...


Tegegne, AzageTaddele, Y.Kassa, T.[Gonadal and extragonadal sperm reserves in two breeds of mature Zebu (Bos indicus) bulls in Ethiopia]Gonadal and extragonadal sperm reserves in two breeds of mature Zebu (Bos indicus) bulls in Ethiopia

Analyses data by analysis of variance to determine seasonal effects on reproductive capacity using the General Linear Models (GLM) procedures of the SAS Programme (SAS, 1987). Body weight was used as a covariate. Polynomial regression analysis was done to determine relationships between body and ...


Tegegne, AzageEntwistle, K.W.Mukasa-Mugerwa, E.[Seasonal influences on gonadal and extragonadal sperm reserves in Small East African Zebu (Bos indicus) bulls in Ethiopia]Seasonal influences on gonadal and extragonadal sperm reserves in Small East African Zebu (Bos indicus) bulls in Ethiopia

An experiment was conducted to determine the effects of feeding different calf starter rations, weaning age and their interactions on testicular growth and body weight of Borena Friesian (BF) crossbred bull calves at the age of 105 (closer to weaning) and 202 (nearly 6 months) days. Statistical a...


Gojam, Y.Tegegne, AzageGebrewold A.Bekele, T.[The effect of weaning age and feeding of different calf starter rations on testicular growth and body weight of Borena-Friesian crossbred bull calves]The effect of weaning age and feeding of different calf starter rations on testicular growth and body weight of Borena-Friesian crossbred bull calves

Gondal and extragonadal sperm reserves were determined in testicular and epididymal tissues obtained from ten Small East African Zebu (SEAZ), ten unimproved Borana and nine improved Boran bulls. Bulls were mature and were between 6 and 8 years of age. Body weight and scrotal circumference differe...


Tegegne, AzageMukasa-Mugerwa, E.Entwistle, K.W.[Genotype differences in gonadal and extragonadal sperm reserves in mature Zebu bulls in Ethiopia]Genotype differences in gonadal and extragonadal sperm reserves in mature Zebu bulls in Ethiopia

A total of 64 bull calves, composed of 27 Boran and 37 Boran X Friesian, were weaned at 6 months of age and divided into supplement or control groups within breed. All bulls were kept in one paddock and grazed on natural pasture. Supplement groups received 1.5 kg per head day of a diet containing...


Tegegne, AzageEntwistle, K.W.Mukasa-Mugerwa, E.[Gonadal and extragonadal sperm reserves and testicular histometric characteristics in Zebu and crossbred bulls: Effect of dry season nutritional supplementation]Gonadal and extragonadal sperm reserves and testicular histometric characteristics in Zebu and crossbred bulls: Effect of dry season nutritional supplementation

Milk yield, milk composition and body weight change of crossbred dairy cows (Holstein Friesian X Zebu) were studied in the urban and peri-urban dairy production systems in the Addis Ababa milk shed between December 1997 and November 1998. Ninety-seven cows, with parities above two and at the begi...


Mekasha, YosephTegegne, AzageYami, A.Umunna, N.N.[Milk production, milk composition and body weight change of crossbred dairy cows in urban and peri-urban dairy production systems in Ethiopia]Milk production, milk composition and body weight change of crossbred dairy cows in urban and peri-urban dairy production systems in Ethiopia

This study was conducted to determine the long term effect of supplementation of L. pallida and S. sesban on growth and reproductive performance of male Ethiopian highland sheep and goats fed teff straw (Eragrostis tef) basal diet. The results show that there was no significant effect of the diff...


Kaitho, R.J.Tegegne, AzageUmunna, N.N.Nsahlai, I.V.Tamminga, S.[Long term effect of browse supplementation on live weight gain and scrotal size in male sheep and goats]Long term effect of browse supplementation on live weight gain and scrotal size in male sheep and goats

Measurements on testis and linear body size, scrotal circumference (SC), testis diameter (TD) hearth girth (HG), height at wither (HTW) and body length (BDL) at the age of 1, 3, 6, 9, 12, 15, 18 and 21 months was taken. Thirteen Borana Friesian (BoXF) crossbred bull calves born at Holetta Agricul...


Gojam, Y.Tegegne, AzageGebre-Wold, A.Alemayehu, M.Yilma, Z.[Testicular growth and its relationship with linear body measurements in Borana-Friesian crossbred bull calves at different ages]Testicular growth and its relationship with linear body measurements in Borana-Friesian crossbred bull calves at different ages

Based on the promising results obtained from on-station, the dairy-draught study was further taken to on-farm for testing it under the Ethiopian smallholder farmers' management conditions. The study was undertaken in Holetta and Addis Alem areas between 1993 and 1997. Mean daily milk yield was si...


Alemayehu, M.Gebre-Wold, A.Tegegne, Azage[Use of crossbred cows for dairy-draught under smallholders farm conditions of Holetta area]Use of crossbred cows for dairy-draught under smallholders farm conditions of Holetta area

This paper Reports on both the individual and combined effects of age at first caving (AFC) and live weight at first calving (LWFC) for crossbred heifers (Friesian x Zebu) on first lactation Milk yield. Optimal health and nutrition management was followed. Fifty one heifers were allocated to youn...


Kebede, B.McCrabb, G.J.Tegegne, AzageYimegnuhal, A.Urge, M.[Effect of age and live weight at first calving on milk yield of crossbred (Friesian x Zebu) heifers on first lactation]Effect of age and live weight at first calving on milk yield of crossbred (Friesian x Zebu) heifers on first lactation

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